I recently bought an MK179 VM and works perfectly.
I wanna know if I can install it after a key pre-existing, so power suppli the unit at 13,8 Dc courent every time I engage or disengage the above RFid key
This is for two reasons
1 Current savings
2 Next-level strong security access key
Many thanks
The 7805 voltage regulator usually has a maximum input voltage of 35V. Since it is a linear regulator, it will get a little warmer, the higher the input voltage. But at the 100 ma, the MK179 is asking for, you are only increasing the heat dissipation from 0.7 to 0.88 Watts.
Grazie MostlyHarmless per la risposta
Io desideravo sapere se il circuito MK 179 non veniva danneggiato se inserivo e disinserivo più volte durante la giornata i 12 V. DC invece di lasciarlo continuamente alimentato. In pratica ogni volta che dovevo utilizzare la chiave RFid alimentavo il circuito, dopo l’uso lo disinserivo. Questa operazione servirebbe:
1 Per risparmio energetico ( MK 179 sempre spento )
2 Per aumentare la sicurezza della chiave (due chiavi, la prima già esistente alimenterebbe MK 179 che aprirebbe la serratura )
Grazie mille
Sorry, I only speak German and English. I can read most Dutch and very little French, but I couldn’t respond in those languages either.
Usually Mk179 works with 12 or 13.8 volts DC voltage always activated ok?.
Can I turn on the MK 179 every time I want to use tag key?
It can happen 8 or 9 times each calendar day
In this specific case MK179 device may be damaged?
Yes, the voltage regulator on the MK179 should handle 13.8V input just fine.
[quote=“Silver2”]Can I turn on the MK 179 every time I want to use tag key?
It can happen 8 or 9 times each calendar day
In this specific case MK179 device may be damaged?[/quote]
That I don’t know.
What I do know is that 12V @ 100mA will amount to a little under 1 KWh per month, which costs about $0.17 here in Pennsylvania. Considering that my electric bill is around $150 per month without the A/C in the summer, the power consumption of that MK179 would not be high on my priority list.
It is not a problem to turn on the unit every time you want to detect a tag.
Ok thank you very much VEL417 this was my doubt.
Leaving the device off for 6 months MK179 risk of losing the memory of Tags
No, this is not the case.
Tag data is stored in eeprom. Data retention is typically 40 years.
Ok many thanks VEL417.